No improvement in Ganga water quality during lockdown-THE HINDU-29-04-2020
The dissolved oxygen concentration, a measure of the amount of free oxygen available in river systems, “rose marginally” from March 22-April 15. A high DO value is considered a good indicator of river health. The lower these numbers are the better they indicate river health.
Marginal reduction can be seen only in the 4th week of the lockdown. Further, there is gradual increase in BOD levels towards downstream stretches of the river, with the maximum values in West Bengal,” according to the CPCB repor.